Fluidized Bed Pyrolysis of Biomass: A Model-Based Assessment of the Relevance of Heterogeneous Secondary Reactions and Char Loading

A model of non-catalytic fast fluidized bed pyrolysis biomass has been developed with the aim investigating relevance secondary heterogeneous reactions between primary products decomposition and char accumulated in bed. The fate extent holdup pyrolyzer have modeled by considering entrainment elutriation particles, attrition, as well drain/regeneration. kinetics pyrolitic is according to a semi-lumped reaction network using kinetic parameters selected among published correlations. rate volatile–char borrowing expression from neighboring area tar adsorption/decomposition over during gasification. Model computations are helpful assess role vapor–char reactions. sensitivity performance on loading result combined entrainment, elutriation, drain/regeneration, gas-phase backmixing, process temperature, gas superficial velocity residence time, particle size demonstrated discussed. results provide useful guidelines pinpoint future research priorities for optimal design control pyrolyzers.